18775264861244 has 48 divisors (see below), whose sum is σ = 33580638672000. Its totient is φ = 9181095469056.

The previous prime is 18775264861207. The next prime is 18775264861247. The reversal of 18775264861244 is 44216846257781.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18775264861247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1887145982 + ... + 1887155930.

It is an arithmetic number, because the mean of its divisors is an integer number (699596639000).

Almost surely, 2^{18775264861244} is an apocalyptic number.

It is an amenable number.

18775264861244 is a deficient number, since it is larger than the sum of its proper divisors (14805373810756).

18775264861244 is a wasteful number, since it uses less digits than its factorization.

18775264861244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16422 (or 16420 counting only the distinct ones).

The product of its digits is 144506880, while the sum is 65.

The spelling of 18775264861244 in words is "eighteen trillion, seven hundred seventy-five billion, two hundred sixty-four million, eight hundred sixty-one thousand, two hundred forty-four".